Ikea Billy doors Olsbo crooked

Hello everyone!

I have been trying for over 2 hours to align the two Olsbo doors on my Billy. The doors close, but at the top where the doors meet, you can see that the right one is about one centimeter higher than the other. Every attempt to turn, slide, or adjust the height has so far been unsuccessful.

I hope someone can help me, thanks in advance!

that the right one is about one centimeter higher than the other

Closer to what? The problem is not entirely clear to me yet. Photos could help.

Probably a hinge is not installed correctly. Remove the door from the hinge again and make sure that the "innere" screw is also properly seated in the hinge.

and how can I tell that it is correct? as far as I can see, all these hinges are quite inflexible and I also thought they were foolproof :)

Picture to follow

So and now the picture. The wardrobe is upright, only the picture is crooked, but I think you can see my problem, where the doors meet.

There could be an assembly error with the shelf behind it. Did you use a level and check the right angles? Another picture showing the entire cabinet would be helpful. Do the outer edges of the doors run parallel to the edges of the shelf? Is the gap between the doors the same width from top to bottom? Are the screws that secure the mounting plates in the same position on both sides (regarding the plate)?